Watchmaker&#39;s lathe.



M. WITART.

WATCHMAKERS LATHE.

APPLICATION FILED JUNE 26. 1915.

Patented Nov. 16, 1915.

3 SHEETS-SHEET I.

CQLUMBM PLANDGRAPH co., WASHINGTON. n. c.

M. WITART.

WATCHMAKERS LATHE.

APPLICATION FILED JUNE 26. 1915.

Patented Nov. 16, 1915.

3 SHEETS-SHEET 2.

COLUMBlA PLANOGRAPH co.,wAsHlNOTON. D. c.

M. WITART.

WATCHMAKERS LATHE.

APPLICATION FILED JUNE 26. I915.

1,1 60,353. Patented Nov. 16, 1915.

3 SHEETS-SHEET 3.

"WINK? emmkWl/IL MATES WITARI'OF WATERB'U'RY, CON N ECTIGUT.

WATCHMAKERS LATHE.

Specification of Letters Patent.

Patented Nov. 116, 1915.

Application filed June 26, 1915. x Serial No. 36,584.

To all to 710m it may concern Be it known that I, MATES WITART, asubject of the Emperor of Russia, residing at Waterhury, in the countyof New Haven and State of Connecticut, have invented a new and usefulImprovement in Watchmakers Lathes; and I do hereby declare thefollowing, when taken in connection with the accompanying drawings andthe characters of reference marked thereon, to be a full, clear, andexact description of the same, and which said drawings constitute partof this application, and represent, in

Figure 1 a front view of a watch makers lathe constructed in accordancewith myin vention. Fig. 2 an end view of the same. Fig. 3 a top or planview, Fig. 4 aside View of the lathe chuck with the index deviceremoved. Fig. 5 a sectional view on the line a-b of Fig. 1. Fig. 6 asectional view on the line (Z of Fig. 3.

This invention relates to an improvement in watch maker-"s lathe, theobject being to combine in a compact and convenient manner withanordinary lathe, means for tapping, milling and other cutting such asis commonly necessary for watch and clock makers; and the inventionconsists in the construction hereinafter described and particularlyrecited in the claims. I

In carrying out my invention, I employ the usual form of lathe bed 2 onwhich is mounted for longitudinal movement a lathe head 3. This bed isremovably mounted on r a vertical post 4; extending into a blocksuitably mounted upon a bed plate 6. In one side of this post 4 is arack 7 to be 'en gaged by a pinion 8 mounted on a shaft 9 which carriesa worm wheel 10 engaged by a worm 11 on a worm shaft 12 which extends toone side of the machine where it is provided with a knurled handle 13 bywhich the worm may be turned to raise and lower the post i. The post maybe firmly locked in any position of adjustment by a set screw 1: 2. Inrear of the lathe bed and mounted upon the bed plate 6 is a bench or"table 15 supporting a frame 16 in which a driving shaft 17 is mountedand adapted to be driven through a pulley 18 from any source of powerand preferably provided at the opposite end with a hand wheel 19. On theshaft is a cone pulley 20 from which a belt may run to a cone pulley 22on a chuck sleeve 23 carrying the usual chuck 24 operated through aspindle 25 in the usual man- 'this shaft being in gear the lathe headinto a notch ner. Also mounted on the driving shaft is a bevel gear 26meshing with a bevel pinion 27 on a milling shaft 28 which projectsoutward over the lathe beds 2 and carries a milling tool or cutter 29.This gear wheel is provided with abelt groove 30 to carry a belt3l to apulley 32 on a tool carrier or chuck 33. The cutter and tool carrier aremounted on a slide 3% longitudinally movable in a frame 16 and the slideis connected by a link 35 with a crank-disk 36 mounted on a shaft 37having a beveled head 38 engaging with a recess 89 formed inthe disk 36,the shaft 37 being drawn rearward by a spring 40, and the shaft isprovided at its outer end with a thumb nut 41 for adjusting the tensionof the spring. This shaft '37 extends through a sleeve i2 fixed to whichis a worm wheel's?) meshing with a worm 44 on a shaft 45 extendingtoward the frame 16,

driving shaft so that as the driving shaft revolves the crank-disk 36Wlll be turned so as to move the slide toward and from the lathe headWltl1111016 or less pressure according to the tension placed upon thespring.

Preferably and as shown, I employ an indeX feed for the chuck sleeve.This consists of a plate 46 mounted on the chuck sleeve and held againstrotation by means of a stop pin 47 projecting outward from 4:8 in theplate. The plate is formed with a segmental slot i9 in which isadjustably mounted a stop 50. On a flanged bushing 51 in the plate is alever 52 guided by the slot 429 against the tension of a spring Thislever carries a spring pawl 5i. adapted to engage with the teeth of anindex wheel 55 which is mounted on the flanged bushing 51 so as toimpart movement to the chuck sleeve. Pivotally mounted onthe plate is adetent spring pawl 56 engaging with the teeth of the index wheel toprevent the retrograde movement. The pawl on the lever is adapt ed toengage and advance the teeth, while the other pawl rides over the teethin an advanced position but holds it against retrograde movement, andthe index wheel may be advanced a predetermined number of teethdetermined by the location of the stop pin 50.

While the cutter and tool carrier may be driven together, one or theother may be cut out. Thus the tool carrier may be cut out connectionwith the sired to cut teeth vanc'ed and retired across by removing thebelt 31,.or the cutter may be thrown out of action by sliding the bevelgear 26 out of mesh with the beveled'pinion 27, the beveled pinion beingfeathered to the driving shaft 17 and may be locked in engagement withthe bevel pinion 27 by means of a latch 57 engaging with a notch 58 inthe hub of the bevel gear or held out of engagement with the bevelpinion by the engagement of the latch 57 with the groove 59 in the hub.If, for instance, it is defor a pinion the blank will be mounted in thechuck in the usual way and the chuck head lowered as shown in Fig. l ofthe drawings so as to properly present the .edge of the blank to be outagainst the cutting or milling tool; and as the mechanism is driven themilling tool will be adthe edge of the blank to be cut, it beingunderstood that the blank is held against rotation. The blank may thenbe advanced to a predetermined extent according to the number of teethto be cut through the movement of the index wheel 55;until the pinion iscomplete. If it is desired to drill this same blank as for cannonpinions, or the placing of pawls, or

ing the work, and when for any other purpose, the lathe head will beelevated into line with the tool carrier which will then be advancedtoward and from the and perform the turning. If it is desired to revolvethe work, then the pulleys 20 and 22 will be connected by a belt so asto cause the chuck to revolve and the work may be suspended between thechuck and the tool carrier in the ordinary manner of lathes; or thedrill may be mounted inthe lathe chuck and the work mounted in the toolcarrier. I thus provide in a simple and convenient way means for holdingwork and advancmg the cutter, drill or other instrument to it, orprovide for rotatthe tools are ad- Gopies of this patent may be obtainedfor five cents each, by addressing the friction feed which may beadjusted to the desired tension. 7

I cla1m 1. A. watchmakers lathe comprising a lathe bed, a frame, aslidein said frame and carrying operating tools, a friction crankdisk, andconnections between said crankdisk and slide for moving said slide.

2. A- watch. makers lathe comprising a lathe bed and head, a frame, aslide in said frame carrying working tools movable'with said slide, acrank-disk, a link connecting the disk with the slide, a sleeve on whichsaid disk is mounted, and means for adjusting the friction between thedisk and the sleeve.

3. A watch makers lathe comprising a lathe bed and head,'a frame inrearof said lathe bed, a driving shaft mounted in said frame, a slidemounted in said frame, said slide carrying operating tool holders,connections between the driving shaft and said tools, whereby disk,connection between the disk and slide, said disk mounted on a sleeve,said sleeve adapted to be turned by said driving shaft, and means foradjusting the tension between i the disk and said sleeve.

4. A watch makers? lathe including a lathe head and chuck sleeve, ofa'plate con nected with said head, an index wheel connected with saidsleeve, a lever, a pawl connected with said lever and adaptedto en gageand advance said index wheel, a pawl adapted to engage with'said wheelto prevent retrograde movement, and a stop adjustably mounted on saidplate in the path of said lever.

MATES WITART.

lVitnesses:

THOMAS W. STOKES, J. P. WASILAUSKAR.

Commissioner of Patents,

Washington, D. 0.

they arerotated, a crank

